PhotoRec ignores the file system in favor of finding lost files, so it works on FAT, NTFS, EXT2/EXT3, HFS, and (with certain caveats) ReiserFS. And since it's looking for known file headers and using data carving techniques, more than eighty file types—among them DOC, PDF, and PPT—are instantly recoverable.

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And recover all the files on Kent's USB drive PhotoRec did; all he had to do was rebuild the directory structure and rename the files.